Title: Beef Up Your Brain: The Big Book of 301 Brain-Building Exercises, Puzzles and Games!, Author: Michel Noir
Title: Increase Your Puzzle IQ: Tips and Tricks for Building Your Logic Power, Author: Marcel Danesi
Title: The Duck That Won the Lottery: 100 New Experiments for the Armchair Philosopher, Author: Julian Baggini
Title: To Mock a Mocking Bird, Author: Raymond M. Smullyan